City vs city
Diamond Bar vs Riverside, CA
Riverside currently scores 12 points higher overall than Diamond Bar, with the largest gap in flood.
Use this comparison for relocation decisions, insurance shopping, and hazard-prioritized mitigation planning.
Hazard breakdown
Scores describe each city’s reference grid tile, not every property. A missing model is unavailable, not zero risk. Air quality uses an ingested EPA AirNow snapshot and may not reflect current conditions; other factors describe baseline exposure. The overall score blends different hazards and is not a probability of damage. Read the scoring methodology and sources.
Overall
Diamond Bar: 20/100 · Riverside: 32/100
Riverside is 12 points higher.
Flood
Diamond Bar: 30/100 · Riverside: 43/100
Riverside is 13 points higher.
Diamond Bar: FEMA NFHL flood zones: 4 features intersect this tile.
Riverside: FEMA NFHL flood zones: 23 features intersect this tile.
Wind
Diamond Bar: 5/100 · Riverside: 5/100
No gap.
Diamond Bar: Wind exposure derived from ingested design wind / climatology tiles.
Riverside: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Diamond Bar: 1/100 · Riverside: 2/100
Riverside is 1 points higher.
Diamond Bar: Lightning exposure derived from ingested climatology tiles.
Riverside: Lightning exposure derived from ingested climatology tiles.
Tornado
Diamond Bar: 4/100 · Riverside: 0/100
Diamond Bar is 4 points higher.
Diamond Bar: Tornado risk derived from NOAA SPC historical reports.
Riverside: Tornado risk derived from NOAA SPC historical reports.
Hail
Diamond Bar: 1/100 · Riverside: 0/100
Diamond Bar is 1 points higher.
Diamond Bar: Hail risk derived from NOAA SPC historical reports.
Riverside: Hail risk derived from NOAA SPC historical reports.
Storm surge
Diamond Bar: Unavailable · Riverside: Unavailable
A score difference cannot be calculated without both sources.
Diamond Bar: Storm surge model is not available for this location yet.
Riverside: Storm surge model is not available for this location yet.
Wildfire
Diamond Bar: 73/100 · Riverside: 76/100
Riverside is 3 points higher.
Diamond Bar: Wildfire exposure derived from ingested fire potential tiles.
Riverside: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Diamond Bar: 28/100 · Riverside: 32/100
Riverside is 4 points higher.
Diamond Bar: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Riverside: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.